Dual-rail system delivers ultra-precise cutting performance through heavy-duty craft materials. Our ProCision™ Rotary Bypass Trimmer features a unique dual-rail system that stabilizes the rotary blade, eliminating wiggle for straight, perfectly precise cuts. As a bonus, it cuts a wide range of thick materials. Additional innovations include a spring-action rotary bypass blade that stays sharp and never needs to be replaced, a built-in smudge guard, grid line measurements on the top and bottom so you can use the base to your left or right, a top-quality work surface for long-lasting performance and a convenient folding design to take up less space during storage and transport.Details:12" surface1 trimmer Ideal for making straight, precise cuts through multiple sheets of cardstock and chipboard, plus more traditional crafting materials like paper and vellumDual-rail system eliminates blade wiggle for straight, precise cuts Spring-action rotary bypass blade stays sharp so it never needs to be replaced Built-in smudge guard keeps your crafting materials fingerprint-free while you cut Grid line measurements on the top and bottom provide versatile use Long-lasting work surface provides accurate measurements every time Rubberized feet offer excellent stability Folding design provides space-saving storage and transport Lifetime warranty